M4.2 earthquake 109 km WNW of Hihifo, Tonga
A magnitude 4.2 earthquake struck 109 km WNW of Hihifo, Tonga on Fri, Apr 6, 2018, 12:17 PM GMT+13 (23:17 UTC), 276 km (171 mi) below the surface.
A larger quake followed: M5.6 91 km NW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-04-05 23:17:11 UTC
- Depth
- 276.0 km (171.5 mi), intermediate-depth
- Epicenter
- 15.520° S, 174.717° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 16.0 km horizontally, 8.6 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 111°
- Stations used
- 29
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.2158 km W of Hihifo, Tonga · 3088 days ago · 293 km deep · 67 km away
- 4.4117 km WSW of Hihifo, Tonga · 3088 days ago · 275 km deep · 85 km away
- 5.691 km NW of Hihifo, Tonga · 3085 days ago · 10 km deep · 26 km away
- 4.0156 km NW of Hihifo, Tonga · 3058 days ago · 253 km deep · 57 km away
- 4.3148 km NW of Hihifo, Tonga · 3044 days ago · 199 km deep · 53 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000dyye. Read Fri, Oct 2, 2026, 9:07 PM UTC.